




// Particle3D class

Particle3D = function (material ) {

	THREE.Particle.call( this, material );
	
	//this.material = material instanceof Array ? material : [ material ];
	
	// define properties
	this.velocity = new THREE.Vector3(0,-1,0);
	this.velocity.rotateX(randomRange(-15,15)); 
	this.velocity.rotateY(randomRange(0,0)); 
	this.gravity = new THREE.Vector3(0,0,0); 
	this.drag = 1; 
	// methods... 
	
};

Particle3D.prototype = new THREE.Particle();
Particle3D.prototype.constructor = Particle3D;

Particle3D.prototype.updatePhysics = function() {
	
	this.velocity.multiplyScalar(this.drag); 
	this.velocity.addSelf(this.gravity);
	this.position.addSelf(this.velocity);

}

var TO_RADIANS = Math.PI/180; 

THREE.Vector3.prototype.rotateY = function(angle){
					
	cosRY = Math.cos(angle * TO_RADIANS);
	sinRY = Math.sin(angle * TO_RADIANS);
	
	var tempz = this.z;; 
	var tempx = this.x; 

	this.x= (tempx*cosRY)+(tempz*sinRY);
	this.z= (tempx*-sinRY)+(tempz*cosRY);


}

THREE.Vector3.prototype.rotateX = function(angle){
					
	cosRY = Math.cos(angle * TO_RADIANS);
	sinRY = Math.sin(angle * TO_RADIANS);
	
	var tempz = this.z;; 
	var tempy = this.y; 

	this.y= (tempy*cosRY)+(tempz*sinRY);
	this.z= (tempy*-sinRY)+(tempz*cosRY);


}

THREE.Vector3.prototype.rotateZ = function(angle){
					
	cosRY = Math.cos(angle * TO_RADIANS);
	sinRY = Math.sin(angle * TO_RADIANS);
	
	var tempx = this.x;; 
	var tempy = this.y; 

	this.y= (tempy*cosRY)+(tempx*sinRY);
	this.x= (tempy*-sinRY)+(tempx*cosRY);


}



// returns a random number between the two limits provided 
function randomRange(min, max)
{
	return ((Math.random()*(max-min)) + min); 
}



;(function($) {
    
    var SCREEN_WIDTH = window.innerWidth;
    var SCREEN_HEIGHT = window.innerHeight;
    var windowHalfX = SCREEN_WIDTH / 2;
    var windowHalfY = SCREEN_HEIGHT / 2;

    var container;
    var particle;
    var camera;
    var scene;
    var renderer;
    var mouseX = 0;
    var mouseY = 0;

    var particles = [];
    var particleImage = new Image();//THREE.ImageUtils.loadTexture( "img/ParticleSmoke.png" );
        particleImage.src = 'catalog/view/theme/kipo/image/snowflake.png'; 

    function detectIE() 
    {
        var ua = window.navigator.userAgent;
        var msie = ua.indexOf('MSIE ');
        var trident = ua.indexOf('Trident/');

        if (msie > 0) {
            // IE 10 or older => return version number
            return parseInt(ua.substring(msie + 5, ua.indexOf('.', msie)), 10);
        }

        if (trident > 0) {
            // IE 11 (or newer) => return version number
            var rv = ua.indexOf('rv:');
            return parseInt(ua.substring(rv + 3, ua.indexOf('.', rv)), 10);
        }

        // other browser
        return false;
    }

    function init() {


                container = document.createElement('div');
                container.className = 'snow';
                container.style = 'pointer-events: none; position: fixed; top:0; z-index: 1000';

                document.body.appendChild(container);

                camera = new THREE.PerspectiveCamera( 75, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 10000 );
                camera.position.z = 1000;

                scene = new THREE.Scene();
                scene.add(camera);

                renderer = new THREE.CanvasRenderer();
                renderer.setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
                var material = new THREE.ParticleBasicMaterial( { map: new THREE.Texture(particleImage) } );

                for (var i = 0; i < 500; i++) {

                    particle = new Particle3D( material);
                    particle.position.x = Math.random() * 2000 - 1000;
                    particle.position.y = Math.random() * 2000 - 1000;
                    particle.position.z = Math.random() * 2000 - 1000;
                    particle.scale.x = particle.scale.y =  1;
                    scene.add( particle );

                    particles.push(particle); 
                }

                container.appendChild( renderer.domElement );


                document.addEventListener( 'mousemove', onDocumentMouseMove, false );
                document.addEventListener( 'touchstart', onDocumentTouchStart, false );
                document.addEventListener( 'touchmove', onDocumentTouchMove, false );
                window.addEventListener( 'resize', onWindowResize, true);

                setInterval( loop, 1000 / 60 );

            }

            function onDocumentMouseMove( event ) {

                mouseX = event.clientX - windowHalfX;
                mouseY = event.clientY - windowHalfY;
            }

            function onDocumentTouchStart( event ) {

                if ( event.touches.length == 1 ) {

                    event.preventDefault();

                    mouseX = event.touches[ 0 ].pageX - windowHalfX;
                    mouseY = event.touches[ 0 ].pageY - windowHalfY;
                }
            }

            function onDocumentTouchMove( event ) {

                if ( event.touches.length == 1 ) {

                    event.preventDefault();

                    mouseX = event.touches[ 0 ].pageX - windowHalfX;
                    mouseY = event.touches[ 0 ].pageY - windowHalfY;
                }
            }

            function onWindowResize(event)
            {
                console.log('Resize');	

                camera.aspect = window.innerWidth / window.innerHeight;
                camera.updateProjectionMatrix();
                renderer.setSize( window.innerWidth, window.innerHeight );

                windowHalfX = window.innerWidth / 2;
                windowHalfY = window.innerHeight / 2;
            }

            //

            function loop() {

                for(var i = 0; i<particles.length; i++)
                {

                    var particle = particles[i]; 
                    particle.updatePhysics(); 

                    with(particle.position)
                    {
                        if(y<-1000) y+=2000; 
                        if(x>1000) x-=2000; 
                        else if(x<-1000) x+=2000; 
                        if(z>1000) z-=2000; 
                        else if(z<-1000) z+=2000; 
                    }				
                }

                camera.position.x += ( mouseX - camera.position.x ) * 0.05;
                camera.position.y += ( - mouseY - camera.position.y ) * 0.05;
                camera.lookAt(scene.position); 

                renderer.render( scene, camera );


            }

    window.onload = function() { if(!detectIE() && !window.mobilecheck()) init();}

	if (document.documentElement.clientWidth > 1030) {
		init();
	} 
		
	
}(jQuery));